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Water Lettuce Resources

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Texas A&M University. AgriLife Extension Service. Department of Wildlife and Fisheries Sciences.
University of Georgia. Center for Invasive Species and Ecosystem Health.
Provides state, county, point and GIS data. Maps can be downloaded and shared.
European and Mediterranean Plant Protection Organization.
IUCN. Species Survival Commission. Invasive Species Specialist Group.
Ontario's Invading Species Awareness Program (Canada).
University of Georgia. Center for Invasive Species and Ecosystem Health.
University of Georgia. Center for Invasive Species and Ecosystem Health.
Pennsylvania Department of Conservation and Natural Resources.
See also: Invasive Plant Fact Sheets for plant species (trees, shrubs, vines, herbs and aquatic plants) that have impacted the state's natural lands
Queensland Business and Industry Portal (Australia).
University of Georgia. Center for Invasive Species and Ecosystem Health.
East African Network for Taxonomy.
Smithsonian Institution. Smithsonian Environmental Research Center. Marine Invasions Research Lab.
DOI. USGS. Wetland and Aquatic Research Center.
Provides distribution maps and collection information (State and County).
DOI. USGS. Wetland and Aquatic Research Center.
Provides detailed collection information as well as animated map.
New South Wales Department of Primary Industries (Australia).
USDA. FS. Institute of Pacific Islands Forestry.
University of Florida. IFAS. Center for Aquatic and Invasive Plants.
USDA. NRCS. National Plant Data Center.